^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Panel driver for the ARM Versatile family reference designs from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * ARM Limited.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Linus Walleij <linus.wallei@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * On the Versatile AB, these panels come mounted on daughterboards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * named "IB1" or "IB2" (Interface Board 1 & 2 respectively.) They
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * are documented in ARM DUI 0225D Appendix C and D. These daughter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * boards support TFT display panels.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * - The IB1 is a passive board where the display connector defines a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * few wires for encoding the display type for autodetection,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * suitable display settings can then be looked up from this setting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * The magic bits can be read out from the system controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * - The IB2 is a more complex board intended for GSM phone development
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * with some logic and a control register, which needs to be accessed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * and the board display needs to be turned on explicitly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * On the Versatile PB, a special CLCD adaptor board is available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * supporting the same displays as the Versatile AB, plus one more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Epson QCIF display.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/mfd/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <video/of_videomode.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <video/videomode.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <drm/drm_modes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <drm/drm_panel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * This configuration register in the Versatile and RealView
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * family is uniformly present but appears more and more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * unutilized starting with the RealView series.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define SYS_CLCD 0x50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* The Versatile can detect the connected panel type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define SYS_CLCD_CLCDID_MASK (BIT(8)|BIT(9)|BIT(10)|BIT(11)|BIT(12))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define SYS_CLCD_ID_SHARP_8_4 (0x01 << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define SYS_CLCD_ID_VGA (0x1f << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* IB2 control register for the Versatile daughterboard */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define IB2_CTRL 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define IB2_CTRL_LCD_SD BIT(1) /* 1 = shut down LCD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define IB2_CTRL_LCD_BL_ON BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define IB2_CTRL_LCD_MASK (BIT(0)|BIT(1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * struct versatile_panel_type - lookup struct for the supported panels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct versatile_panel_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * @name: the name of this panel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * @magic: the magic value from the detection register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u32 magic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * @mode: the DRM display mode for this panel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct drm_display_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @bus_flags: the DRM bus flags for this panel e.g. inverted clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) u32 bus_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @width_mm: the panel width in mm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) u32 width_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * @height_mm: the panel height in mm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u32 height_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @ib2: the panel may be connected on an IB2 daughterboard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) bool ib2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * struct versatile_panel - state container for the Versatile panels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct versatile_panel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @dev: the container device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * @panel: the DRM panel instance for this device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct drm_panel panel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * @panel_type: the Versatile panel type as detected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) const struct versatile_panel_type *panel_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @map: map to the parent syscon where the main register reside
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct regmap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * @ib2_map: map to the IB2 syscon, if applicable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct regmap *ib2_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static const struct versatile_panel_type versatile_panels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * Sanyo TM38QV67A02A - 3.8 inch QVGA (320x240) Color TFT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * found on the Versatile AB IB1 connector or the Versatile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * PB adaptor board connector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .name = "Sanyo TM38QV67A02A",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .magic = SYS_CLCD_ID_SANYO_3_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .width_mm = 79,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .height_mm = 54,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .mode = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .clock = 10000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .hdisplay = 320,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .hsync_start = 320 + 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .hsync_end = 320 + 6 + 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .htotal = 320 + 6 + 6 + 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .vdisplay = 240,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .vsync_start = 240 + 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .vsync_end = 240 + 5 + 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .vtotal = 240 + 5 + 6 + 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * Sharp LQ084V1DG21 640x480 VGA Color TFT module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * found on the Versatile AB IB1 connector or the Versatile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * PB adaptor board connector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .name = "Sharp LQ084V1DG21",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .magic = SYS_CLCD_ID_SHARP_8_4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .width_mm = 171,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .height_mm = 130,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .mode = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .clock = 25000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .hdisplay = 640,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .hsync_start = 640 + 24,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .hsync_end = 640 + 24 + 96,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .htotal = 640 + 24 + 96 + 24,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .vdisplay = 480,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) .vsync_start = 480 + 11,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .vsync_end = 480 + 11 + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .vtotal = 480 + 11 + 2 + 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * Epson L2F50113T00 - 2.2 inch QCIF 176x220 Color TFT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * found on the Versatile PB adaptor board connector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .name = "Epson L2F50113T00",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .magic = SYS_CLCD_ID_EPSON_2_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .width_mm = 34,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .height_mm = 45,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .mode = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .clock = 62500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .hdisplay = 176,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .hsync_start = 176 + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .hsync_end = 176 + 2 + 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .htotal = 176 + 2 + 3 + 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .vdisplay = 220,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .vsync_start = 220 + 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .vsync_end = 220 + 0 + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .vtotal = 220 + 0 + 2 + 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * Sanyo ALR252RGT 240x320 portrait display found on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * Versatile AB IB2 daughterboard for GSM prototyping.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .name = "Sanyo ALR252RGT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .magic = SYS_CLCD_ID_SANYO_2_5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .width_mm = 37,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .height_mm = 50,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) .mode = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) .clock = 5400,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) .hdisplay = 240,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) .hsync_start = 240 + 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) .hsync_end = 240 + 10 + 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) .htotal = 240 + 10 + 10 + 20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) .vdisplay = 320,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) .vsync_start = 320 + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) .vsync_end = 320 + 2 + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) .vtotal = 320 + 2 + 2 + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) .bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) .ib2 = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static inline struct versatile_panel *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) to_versatile_panel(struct drm_panel *panel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return container_of(panel, struct versatile_panel, panel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int versatile_panel_disable(struct drm_panel *panel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct versatile_panel *vpanel = to_versatile_panel(panel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /* If we're on an IB2 daughterboard, turn off display */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (vpanel->ib2_map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) dev_dbg(vpanel->dev, "disable IB2 display\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) regmap_update_bits(vpanel->ib2_map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) IB2_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) IB2_CTRL_LCD_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) IB2_CTRL_LCD_SD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int versatile_panel_enable(struct drm_panel *panel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct versatile_panel *vpanel = to_versatile_panel(panel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* If we're on an IB2 daughterboard, turn on display */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (vpanel->ib2_map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) dev_dbg(vpanel->dev, "enable IB2 display\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) regmap_update_bits(vpanel->ib2_map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) IB2_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) IB2_CTRL_LCD_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) IB2_CTRL_LCD_BL_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static int versatile_panel_get_modes(struct drm_panel *panel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct drm_connector *connector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct versatile_panel *vpanel = to_versatile_panel(panel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct drm_display_mode *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) connector->display_info.width_mm = vpanel->panel_type->width_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) connector->display_info.height_mm = vpanel->panel_type->height_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) connector->display_info.bus_flags = vpanel->panel_type->bus_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) mode = drm_mode_duplicate(connector->dev, &vpanel->panel_type->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) drm_mode_set_name(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) mode->width_mm = vpanel->panel_type->width_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) mode->height_mm = vpanel->panel_type->height_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) drm_mode_probed_add(connector, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static const struct drm_panel_funcs versatile_panel_drm_funcs = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) .disable = versatile_panel_disable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .enable = versatile_panel_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .get_modes = versatile_panel_get_modes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static int versatile_panel_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct versatile_panel *vpanel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct device *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct regmap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) parent = dev->parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (!parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) dev_err(dev, "no parent for versatile panel\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) map = syscon_node_to_regmap(parent->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (IS_ERR(map)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) dev_err(dev, "no regmap for versatile panel parent\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return PTR_ERR(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) vpanel = devm_kzalloc(dev, sizeof(*vpanel), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!vpanel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ret = regmap_read(map, SYS_CLCD, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) dev_err(dev, "cannot access syscon regs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) val &= SYS_CLCD_CLCDID_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) for (i = 0; i < ARRAY_SIZE(versatile_panels); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) const struct versatile_panel_type *pt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) pt = &versatile_panels[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (pt->magic == val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) vpanel->panel_type = pt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* No panel detected or VGA, let's leave this show */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (i == ARRAY_SIZE(versatile_panels)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) dev_info(dev, "no panel detected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) dev_info(dev, "detected: %s\n", vpanel->panel_type->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) vpanel->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) vpanel->map = map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* Check if the panel is mounted on an IB2 daughterboard */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (vpanel->panel_type->ib2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) vpanel->ib2_map = syscon_regmap_lookup_by_compatible(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) "arm,versatile-ib2-syscon");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (IS_ERR(vpanel->ib2_map))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) vpanel->ib2_map = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) dev_info(dev, "panel mounted on IB2 daughterboard\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) drm_panel_init(&vpanel->panel, dev, &versatile_panel_drm_funcs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) DRM_MODE_CONNECTOR_DPI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) drm_panel_add(&vpanel->panel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static const struct of_device_id versatile_panel_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) { .compatible = "arm,versatile-tft-panel", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) MODULE_DEVICE_TABLE(of, versatile_panel_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static struct platform_driver versatile_panel_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .probe = versatile_panel_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) .name = "versatile-tft-panel",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .of_match_table = versatile_panel_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) module_platform_driver(versatile_panel_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) MODULE_DESCRIPTION("ARM Versatile panel driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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